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Scott AndrewsFlag for United States of America

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MacPro Yosemite Startup Disk Cannot Find Win7 In Bootcamp

After doing an Upgrade Repair of my Win7 SP1 everything was fine... until I booted into Yosemite and soon noticed that my Win7 partition had disappeared from the Startup Disk!

My Mac OS partition still shows up in the Win7 Bootcamp Startup.

And I can still use the Option key to access either on reboot.

But I cannot select a Win7 reboot from my Mac desktop.
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strung
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Did you by any chance install the NTFS-3G driver?

There are reports that when the NTFS-3G driver is installed, you can no longer have the Windows partition in the Startup Disk prefpane.
This can also happen if you resize a partition.
Other third party NTFS drivers can also cause the problem.
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Didn't install any drivers... just an Upgrade Repair using Win7 ISO. Nor did I resize the partition.
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strung
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Win7 is running fine... don't see any driver issues.

Save for the Startup disk missing Win7 both OS's are fine.

Concerned that I might have an MBR problem.
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marsilies

What do you see in Disk Utility in OS X? Does it show the Boot Camp partition?
Yes.... it does show the Boot Camp partition along with a 2nd NTFS partition on the same drive. My Boot Camp partition is on a separate drive from the Mac OS drive. I also ran verify and repair on the Boot Camp drive from Disk Utility... no problems!
Can you write to the second NTFS partition while booted from the Mac OS? If so, you must have a third party NTFS driver installed. Please post a screen shot of your System Preferences Panel.
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Sorry.... my numbering is long by 1... Disk 1 should be Disk 0... etc.
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Here is my Disk 0 drive which contains Mac OS 10.10.1! Disk 2 is the Win 7 boot camp drive.

Last login: Sat Jan 10 06:22:50 on console
Macintosh:~ sudo gpt -vv -r show /dev/disk0
Password:
gpt show: /dev/disk0: mediasize=320072933376; sectorsize=512; blocks=625142448
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 625142447
      start       size  index  contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6        
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  623463232      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  623872872    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  625142408          7        
  625142415         32         Sec GPT table
  625142447          1         Sec GPT header
Never got a real solution!